Just listened. I think your albyhub problems are related to private channels.

The channel you open to their provider should be public "for podcasting".

https://guides.getalby.com/user-guide/alby-account-and-browser-extension/alby-hub/faq-alby-hub/should-i-open-a-private-or-public-channel

Also verify your node is visible on the network. Is this it? (1 year old, 0 channels?)

https://amboss.space/node/026fee5ebbf2334f045808ed50182a7578facf29894d27038e6f5fb8123f75f87a

And of course that LND is configured to receive keysend payments.